Molder&#39;s flask.



PATENTED FEB. 25, 1908.

D PARKS.

MOLDERS PLASK.

APPLICATION FILED AUG 15, 1907 FEED STATES PATENT OFFICE DENNIS PARKS, OF ST. LOUIS, MISSOURI.

MOLDERS FLASK.

.l'ilo. 880,396.

specification of Letters Patent.

Patented. Feb. 35,1908.

Applicationfiled August 15. 1907. Serial No. 388.588.

. Molders Flasks, of which the following is a and the pattern wit again and placed in position on the drag, or

specification.

This invention relates to the art of molding, and has for its object"improvements in the construction of the flask, or receptacle, used by the molder for containing in. molded term the sand which has been palced about a pattern.

The invention aims to provide a flask, or flash-member, in which provision is made for accommodating patterns of varying heights and configurations, and for insuring the firm retention of the molded sand in the flask after the pattern hasbeen withdrawn. The invention is directed, more particularl y, to the cope, or upper member of the dean, which, after the sand has been packed therein about the drawn, and then turned lower member of the flask. Great difilculty has been experienced in providing means for securely holding the sand in the cope so that it will not fall out when the cops is turned over, and this difficulty is increased when the nature of the pattern requires a thin layer of sand,or thin, or narrow, projecting bodies of sand to be supported, these parts of the molded sand frequently falling out, when the cope is reversed, upon the molded sand in the drag, and necessitating the repaclring of both members of the flask. To overcome this difficulty, some foundries, whose Work is restricted to special articles, such as bath-tubs, or the like, have adopted the expedient of providing a special constructicn of cope, in which provision is made for adequately supporting the sand,- such co es-however, are of no use in molding any other article. Aside from these special constructions, the well-nigh universal custom is to secure a number of wooden or iron bars in the cope, to cut away or cast these bars on one sine to conform, in ageneral way, to the shape of the pattern, and then, in the case of. wooden baraflto drives large number of nails part. way ili each bar the-pro jecting heads cf-the .najls'being relied on to espasdinggunder the inte seheat of the 1pattern must be turned for useywith a the wood to such an extent thaton cooling they frequently dro out, and more nails must be driven in t e bars. Furthermore, the *nails falling out get mixed in with the sand, and must be removed by careful sifting of the latter. The use of specially constructed bars, such as metal bars provided having in their lower edges dovftailed grooves, adapting them to support the sand, has been suggested, to avoid the use of nails. Such constructions, if practicable at all, are expensive, as it is manifest the bars in each cope must be shaped to conform to the particular pattern to be molded, and that a cope provided with such speciallyshaped bars would be useful only in connecwas constructed. And even where a verticaladjustment of the bars in the cope is provided for, which has been suggested, the range or use of such copes is only verylimited to molding articles having a comparatively'flat surface. In other words, as the sand-supports (such'as the heads of nails) must a proach to within [about onefourth inch 0 the molded surface in order to support the sand, it is'manifes't that a straig t bar cannot be used with a attern face, and that bars shaped to conform to a particular surface, cannot be used with a pattern having a surface of another shape or configuration. I believe the above repree sents,'in a general way, the present state molding, and, so far as I am aware, no one has ever heretofore produced a flask memher with revision for adjustably mounting a series 0 sand-supports, or anchors, therein in such manner as to render the same capable. of .use with any shape or configuration of pattern whatsoever Within the l mits of the capacity of the flask, and so that the same ferent patterns, in each case requiring merely an adjustment of the sand-su form to the articular shape tobemoldedi,

"Heretofore, the services of a skilled artisari, or, at least a, thoroughly experienced workman, were 0 k; the pattern attern' of an con figuration. -My 1nvent1on', on the other hand,

such a sim le'meimsql tion with the special pattern for which it.

slightly extended, and is still necessarily.

ports to con- 1 195.

required tol prepare a cope...

throughout their length with holes, and

having either a curved or an irregu ar surof knowledge as to this phase of the art of I fiaskmember, or cope, may be used with. dif- I desired adjusted position of the sand-anchors, or supports, that a mere novice, after having the device explained to him, can readily prepare a cope for use with any given pattern, and in a fraction of the time required under the present system of cutting away the wooden bars to the required shape, and then driving nails therein.

Having thus outlined, in a generalway, the purposes and advantages of my invention, I will proceed to describe the same, and the manner of its use referring to the accompanying drawings, in. which:

Figure 1 is a cross-sectional view through a cope provided with my improvements, one of the bars for holdingthe sand-supporting devices being shown partly in elevation, and partly in section, the sand-supports being shown adjusted to have their lower headed ends conform to the outline of two patterns, and the'cope, as a whole, being in readiness to have the sand packed therein about said patterns. Fig. 2 is a cross-sectional view through the co e, viewed in the opposite direction from 1g. 1, to show the opposite side of one of the bars, and with the mtterns removed to show the manner inw ich the packed sand is held in the cope by the sandsupports; and Fig. 3 is a view showing the cope partly in section and partly in elevation, the view being on a line at right angles to i that of Figs. 1 and 2.

Referring now to the drawing, 1 indicates the frame of the cope, 2 bars running from side to side of said cope and secured therein in any preferred manner in spaced parallel relation. Each of the bars 2 is preferably made of cast-iron and is constructed in a special manner to enable a series of sandsup orts 3 to be adjustably held therein. Eac of the sand-supports 3 comprises a cylindrical shank 4 having a pointed or tapering end 5 and a headed end 6. .ln practice, 1 emplo ordinary wire nails for this purpose Each 0 the bars 2 is provided on one side. as shown in the Figs. 1 and 3, with a longitudinally-extending recess 7, which terminates near "the opposite ends of the bar, and

'- which has an inc ined wall 8, which incline 'outt extends from the bottom of the recess substantially to the top of the bar. The bottom of this recess is located at a distance of a half-inch, more, or iess, from the bottom, or the lower edge of, the bar, providing a laterallyrojeeting flange 9, extending throughhe length of said recess, or substantially so. A series of apertures 10 are bored throu h the flange 9 in a vertical direction,

in such manner as to open into the recess 7, and with their inner edges lying in the line of the bottom of the wall 8 of said recess. as clearly shown by Fig. The apertures 10 are equi-distant from each other, and extend substantially from end to end of the flange 9, and are for the purpose of receiving the sandsupports 3, which have their pointed ends inserted therein from the bottom or lower side of the flange 9. As soon as the pointed end of each sand-support emerges from the upper end of its aperture 10, it will engage the wall 8 of the recess, as will be clear) seen; by forcin said sand-support further inward, its en will be deflected from n straight line, and the sand-support will there" by he clamped between the wall 8 and the wall of the aperture 10. Driving-the nail i further in wil result in slightly bending enough to only slightly hen the nai s, or sand-supports, even when they are driven to the limit of their inward adjustment. Va-

rious ranges of adjustment of these sandsupports, or nails, are shown in Fig. -'1, to better illustrate which two shown inclosed in the cope. T e purpose of having the inner edges of the a ertures 10 atterns are 85.

it, 1, but the incline of the wall 8 1s (preferabl ust he in the line of the bottom of t e incline 8 is to provide for the maximum outwardadjustment of the nails; in other words, the bindin r of the nails begins as soon as their points the apertures 10. The pointed ends of the sand-supports, of course, facilitate the readi-. ness with which the inner ends of said sup-1 ports will pass over the inclined surface 8,- as said supports are driven to their adjusted positions.

' The manner of use of my im roved bars, or the cope provided with such am, will be readily apparent to those skilled in the art, and consists simply in inserting the nails in the various apertures and drivingthem in to the desir'ed distance so that, as a whole, the nails will conform to the configuration ofthe pattern, or to' several atterns, as the case may be. The nails, w ien driven into contact with the incline S, are held firmly in position, and cannot be shaken or jarred loose. They can, however, be readily removed by a low taps of a hammer on their inner ends, or by the use of a hammer or nail-set, or similar implement. should not be: positioned so as to lie within some weak portion of the body of sand, it may be bent to the desired position by blows from a hammer.

A further adjustment is secured v.by the, preferred. manner of mounting the bars in the cope, which is as"l'ollows: Castintegral with each bar, and projecting at right an les thereto on opposite sides and at each en of the. bar, are lugs 1] having elongated apex: turcs 12, through which, and through the sides of the cope, bolts 13 are curing the bars in the cope. the nuts on thesebolts the bars may be adjusted lun'izonn lly, as will be apparent, in order to bring the nails carried by the barsover the desircd portion of the pattern. For the purpose of more curely holding, or

If one or more of the nails gpssed for se y loosening ends emerge from the upper ends of the sand advantageously employed in anyof. the sevspecial cope for each I therein will,

7, with but with each set of bars secured in a cope, a

"ports is .ticably be accommodated in the same size of 1 cope specially well as In systems Where the cope is placed on means s that of the present case, but coming within of roups of sand-supports, the supports in each row being independently adjustable vertically.

5.-A molders flask provided with sandsupports adjustable vertically and horizontally.

6. A molders sand-supports adjustable vertically and horizontally.

7. A' inolders flask provided with a series 'of groups of sand-supports, each of said supports being adjustable vertically and ear-'1 group of sand-supports being adjustable in a body horizontally.

8. A molders flask provided with a series of rows of sand-supports, the supports in each row being independently adjustable vertically, and each of said rows of supports being bodily adjustable horizontally.

9. A molders flask provided with a series of supports, and a series of sand-anchors mounted in each support and adjustable vertically. I

10. A molders flask provided with a series of supports adjustable horizontally, and a series of sand-anchors mounted ineach support and independently adjustable vertically.

1 1. A molders flask provided with a series of supports, a series of sand-anchors mounted in each support and adjustable vertically, and means for locking said anchors in adjusted positions.

12. A molders flask provided with a series of spaced parallel bars and a series of sandsuppo'rts mounted in each bar and vertically adjustable therein. 7

13. A molders flask provided with a series of spaced parallel bars capable of horizontal adjustment, and a series of sand-supports mounted in each bar and vertically adjustable therein.

14. A bar for a molders flask having a series of sand-supports adjustably mounted therein.

15. A bar for a molders flask provided with a series of apertures and havin r an inclined surface cutting the plane of t e axes of said apertures. i j,

16. Albarfor a molders flask provided in one sideiyith a longitudinally-extendin recess having an inclined-wall, and provided with a series of apertures extending from one in place in the spaces bebars I provide each bar on that containing the recess a lengitudinally-extending groove 14, which, inf a well-understood manner, will assist in holding the sand from falling. Of course the bars -2 may be made of different lengths and different heights respectively,

tween the various side opposite to wide range of adjustment of the sand-suprovided, so that the same flask may be, emp oyed in connection with patterns which vary in size and configuration. Furthermore'the range of adjustment of the sand-su ports is sufiicient to accommodate within t e cope as large patterns as can pracconstructed for the purpose. I t will also beseen that a cope having my improved bars and sand-supports may be eral fsystems of molding now invogue. For instance, in a system where match-boards are employed and drawn from the cope, as

the packed drag, the upper half of the pattern secured in position on the half of the pattern in 'thedrag, and the sand then packed in the: dope about the pattern. I have not tho y it necessary to describe in detail theo erajti'on of preparing the flask for receivin lib molten metal, as such operation is wefi known.

The use of my improved cope, will, to a large extent, obviate the necessity of foundries, doing general foundry work, making a particular pattern, and 'lication of flasks or copes, and consequent y the time and money heretofore necessary to be expended thereon. The broad idea of my invention, that is to say, the. bar for a molders flask, having the series of sand-supports adjustably mounted as will be readily understood, include Various other means of locking the sand-su ports in position than the particular own and described herein, and, in a companion application filed August 15, 1907, Serial No. 388,589, I have shown and described constructions of bars differing from us save the multi the broad idea of the invention.

I claim: j afforded-by said recess, and opening into the 1. it molders flask provided with a series I latter. v of rcups of sand-su ports, the su ports. in l 17. A'bar for a molders flask provided in eac group being in ependently ad justable. I one side with a longitudinally-extending 2. A molders flask provided with a series. j recess having an inclined Wall, and provide with apertures extending from one edge of said bar through the bod of metal afforded by said recess and opening into the latter, the line of juncture of the Wall of said recess eac group being vertically.

.3. A molders flask provided with a series of,rows of sand-supports, the supports in with said-body of metal being tangent to all each row being independently adjustable, of said apertures.

- 4. A molders flask provided with a series 18. I of rows pfdsand-supports, the support jin cast-iron bar for a molders flask provided in independently adjustable flask provided with headed edge of said bar through the body ofmetal Asa new'article of manufacture a i one side with a: longitudinalLy-extendin recess having an inclined Wall and provide. with a line of apertures extending om one edge of said bar through the body of said metal afforded by said recess and opening into the latter, said inclined wall cuttin the lane of the axes of said apertures, saic bar eing also provided on its opposite side with a locking groove.

19. A bar for a molders flask provided witha series of apertures adapted to have na'ilsfor the like, inserted therein to act as sand-supports, said bar having means associated with said apertures and ada ted to be engaged by the nails inserted t e'rein, to

;to be locked in adjusted tures, said bar beingfS configlillreiktode e03 20 or t e' e, passe the ends of the mar throughsaid apertures. V I

In testimony whereof I have hereunto set my hand in presence of two subscribing] w tnesses. v

DENNIS PARKS.

' Witnesses:

WJP. FRENCH,

WM. WILLIAMSON. 

